Your argument that because bees display a similar behavior, that it's grounds to invalidate the credibility the people conducting this study of Orangutan's cognitive abilities is based on conjecture. You are conflating a reference to another intelligent species as evidence to support a counter view to a commonly agreed upon advanced cognitive capabilities of the Orangutan.

A previous study shows Orangutans do indeed have excellent memories and are able to communicate with humans using commonly agreed upon visual symbols. Long past the 120 seconds.

https://www.youtube.com/watch?v=kwslHICR7K4

side-note: I feel that often, parent's comment gets a lot of likes, not for the validity of the argument but rather being contrarian for the sake of it. It's troubling because often it appears that they are providing commentary on an area totally unfamiliar and outside the usual field of expertise like engineering. Instead what I see is erroneously inferring logic based on the specific pieces mentioned without taking account in to the larger picture. These scientific studies are conducted not one off but to support previous widely held beliefs by the scientific community with vastly more focused experience on their topic of research, just wish that HN folks would give them a more credit and practice modesty. Some people on HN don't even bother reading journals or studies being posted here, instead they just blindly hop on the bandwagon with serious holes in the argument.